diff options
Diffstat (limited to 'src/java/com/jogamp/common/nio/MappedByteBufferOutputStream.java')
| -rw-r--r-- | src/java/com/jogamp/common/nio/MappedByteBufferOutputStream.java | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/java/com/jogamp/common/nio/MappedByteBufferOutputStream.java b/src/java/com/jogamp/common/nio/MappedByteBufferOutputStream.java new file mode 100644 index 0000000..498e9f7 --- /dev/null +++ b/src/java/com/jogamp/common/nio/MappedByteBufferOutputStream.java @@ -0,0 +1,156 @@ +/** + * Copyright 2014 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ +package com.jogamp.common.nio; + +import java.io.IOException; +import java.io.OutputStream; + +public class MappedByteBufferOutputStream extends OutputStream { + private final MappedByteBufferInputStream parent; + + MappedByteBufferOutputStream(final MappedByteBufferInputStream stream) throws IOException { + this.parent = stream; + } + + /** + * See {@link MappedByteBufferInputStream#setLength(long)}. + */ + public final synchronized void setLength(final long newTotalSize) throws IOException { + parent.setLength(newTotalSize); + } + + /** + * See {@link MappedByteBufferInputStream#notifyLengthChange(long)}. + */ + public final synchronized void notifyLengthChange(final long newTotalSize) throws IOException { + parent.notifyLengthChange(newTotalSize); + } + + /** + * See {@link MappedByteBufferInputStream#length()}. + */ + public final synchronized long length() { + return parent.length(); + } + + /** + * See {@link MappedByteBufferInputStream#remaining()}. + */ + public final synchronized long remaining() throws IOException { + return parent.remaining(); + } + + /** + * See {@link MappedByteBufferInputStream#position()}. + */ + public final synchronized long position() throws IOException { + return parent.position(); + } + + /** + * See {@link MappedByteBufferInputStream#position(long)}. + */ + public final synchronized MappedByteBufferInputStream position( final long newPosition ) throws IOException { + return parent.position(newPosition); + } + + /** + * See {@link MappedByteBufferInputStream#skip(long)}. + */ + public final synchronized long skip( final long n ) throws IOException { + return parent.skip(n); + } + + @Override + public final synchronized void flush() throws IOException { + parent.flush(); + } + + @Override + public final synchronized void close() throws IOException { + parent.close(); + } + + @Override + public final synchronized void write(final int b) throws IOException { + parent.checkOpen(); + final long totalRem = parent.remaining(); + if ( totalRem < 1 ) { // grow if required + parent.setLength( parent.length() + 1 ); + } + if ( ! parent.slice( parent.currSlice ).hasRemaining() ) { + if ( !parent.nextSlice() ) { + if( MappedByteBufferInputStream.DEBUG ) { + System.err.println("EOT write: "+parent.slices[ parent.currSlice ]); + parent.dbgDump("EOT write:", System.err); + } + throw new IOException("EOT"); + } + } + parent.slices[ parent.currSlice ].put( (byte)(b & 0xFF) ); + } + + @Override + public final synchronized void write(final byte b[], final int off, final int len) throws IOException { + parent.checkOpen(); + if (b == null) { + throw new NullPointerException(); + } else if( off < 0 || + off > b.length || + len < 0 || + off + len > b.length || + off + len < 0 + ) { + throw new IndexOutOfBoundsException("offset "+off+", length "+len+", b.length "+b.length); + } else if( 0 == len ) { + return; + } + final long totalRem = parent.remaining(); + if ( totalRem < len ) { // grow if required + parent.setLength( parent.length() + len - totalRem ); + } + int written = 0; + while( written < len ) { + int currRem = parent.slice( parent.currSlice ).remaining(); + if ( 0 == currRem ) { + if ( !parent.nextSlice() ) { + if( MappedByteBufferInputStream.DEBUG ) { + System.err.println("EOT write: offset "+off+", length "+len+", b.length "+b.length); + System.err.println("EOT write: written "+written+" / "+len+", currRem "+currRem); + System.err.println("EOT write: "+parent.slices[ parent.currSlice ]); + parent.dbgDump("EOT write:", System.err); + } + throw new InternalError("EOT"); + } + currRem = parent.slice( parent.currSlice ).remaining(); + } + parent.slices[ parent.currSlice ].put( b, off + written, Math.min( len - written, currRem ) ); + written += Math.min( len - written, currRem ); + } + } +} |